More regular security checks (including health checks) of such personnel would be an additional prudent undertaking, the costs of which should be considered during the pre-contract phase along with the direct costs of outsourced operations (see recommendation 6).
Otra medida prudente sería someter a ese personal a controles de seguridad más regulares, cuyos costos deberían examinarse en la fase contractual junto con los costos directos de las operaciones contratadas en el exterior (véase la recomendación 6).